Rotor and flexible drive shaft assembly

Details Rotor and flexible drive shaft assembly Rotor and flexible drive shaft assembly

1994-04-12

1995-05-02

Bertsch, Richard A.

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

403376, F01C 500

Patent

active

054113830

ABSTRACT:
A rotor and flexible drive shaft assembly for a progressive cavity pump or motor in which the rotor 10 is provided with an end portion 12 and the drive shaft 20 is provided with a head portion 18. A transverse spirally wound sheet metal pin 24 is engaged in the first passage 16 in the end portion 12 and a second passage 22 in the head portion 18, a retaining sleeve 26 preventing the pin from falling out, the retaining sleeve itself being held in place by a circlip 32.

REFERENCES:
patent: 2924180 (1960-02-01), Bourke et al.
patent: 3600113 (1971-08-01), Pahl et al.
patent: 4990070 (1991-02-01), Maruyama et al.

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